D-InSAR技术在地震同震形变研究中的应用
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摘要
InSAR技术全天候、全天时、大面积、高精度、高可靠性的观测能力已经越来越开始受到世人的瞩目。目前的InSAR技术已不仅仅是测绘研究领域获取高精度数字地形高程模型 (DEM )的一种解决途径。随着合成孔径雷达差分干涉测量技术 (D InSAR)的不断发展 ,该技术已经开始比较广泛地应用于地形测绘、地震同震形变、地面沉降、滑坡、火山爆发、冰川运动等研究领域的探索和实践之中 ,并且开始在地表变形与运动研究中发挥出相当重要的作用。本文介绍的重点是D InSAR技术的基本原理、研究现状及其在地震同震形变中的应用和前景
Differential Interferometric Synthetic Aperture Radar becomesa popular observation on the deformation of crustal surface because of the minimum constraints on time-of-day and atmospheric condition and because of the unique responses of terrain and cultural targets to radar frequencies. Although InSAR is a very important method to obtain the DEM of the earth,the precise crustd eformation of great areas can be observed by using the D-InSAR observation.Aswhich is used in the reserch on co-seismic deformation,D-InSAR will be used more extensively on other new scopes,such as terrain mapping,land subsidence,landslide,volcano eruption,and glacier motion.As the asic theory is depicted first,how D-InSAR to be used in the research on coseismic deformation,and its prospect are the important parts in this paper.
Differential Interferometric Synthetic Aperture Radar becomesa popular observation on the deformation of crustal surface because of the minimum constraints on time-of-day and atmospheric condition and because of the unique responses of terrain and cultural targets to radar frequencies. Although InSAR is a very important method to obtain the DEM of the earth,the precise crustd eformation of great areas can be observed by using the D-InSAR observation.Aswhich is used in the reserch on co-seismic deformation,D-InSAR will be used more extensively on other new scopes,such as terrain mapping,land subsidence,landslide,volcano eruption,and glacier motion.As the asic theory is depicted first,how D-InSAR to be used in the research on coseismic deformation,and its prospect are the important parts in this paper.
引文
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[12] 徐锡伟,宋方敏,杨晓平,等.中国大陆地表破裂型潜在震源区的地震地质综合判定[J].震情研究,2000,44(1):1426.
[13] 张景发,刘钊.InSAR技术在西藏玛尼强震区的应用[J].清华大学学报(自然科学版),2002,42(6):847850.
[14] 徐锡伟,冉勇康,周本刚,等.张北尚义地震的地震构造环境与宏观破坏特征[J].地震地质,1998,20(2):135145.
[15] 王超,张红,刘智.星载合成孔径雷达干涉测量[M ].北京:科学出版社,2002.
[2] 王超,刘智,张红.张北尚义地震同震形变场雷达差分干涉测量[J].科学通报,2000,45(23):25002553.
[3] 王峰,王建华,吴云.差分雷达干涉测量原理及其在形变测量中的应用[J].地壳形变与地震,1997,17(3):6267.
[4] MassonnetD ,RossiM ,CarmonaC ,etal.Thedisplacementfieldofthelandersearthquakemappedbyraderinterferometry[J].Nature,1993,364:138142.
[5] PeltzerG ,HudnutK ,FieglK .Analysisofcoseismicsurfacedisplacementgradientsusingradarinterferometry:newinsightsintothelandersearthquake[J].J.Geophys.Res,1994,99:2197121981.
[6] MassonnetD ,FeiglKL .Discriminationofgeophysicalphenomenainsatelliteradarinterferograms[J],Geophys.Res.Lett,1995,22(12):15371540.
[7] HernandezB ,CottonF ,CampilloM ,etal.Acomparisonbetweenshortterm(CoSeismic)andlongterm(one year)slipfromthelandersearthquake:measurementsfromstrongmotionandSARinterferometry[J].Geophys.Res.Lett,1997,24:15791582.
[8] PriceEJ,SandwellDT .Small scaledeformationsassociatedwiththe1992landers,california,earthquakemappedbysyntheticapertureradarinterferometryphasegradients[J].J.Geophys.Res,1998,103:2700127016.
[9] MassonnetD ,ThatcherW ,andVadonH .Detectionofpostseismicfault zonecollapsefollowingthelandersearthquake[J].Nature,1996,382(6592):612616.
[10] PeltzerG ,CrampeF ,KingG .EvidenceofnonlinearelasticityofthecrustfromtheMw7.6Mani(Tibet)Earthquake[J].Science,1999,286:272276.
[11] 单新建,马瑾,王长林,等.利用差分干涉雷达测量技术(D InSAR)提取同震形变场[J].地震学报,2002,24(04):413420.
[12] 徐锡伟,宋方敏,杨晓平,等.中国大陆地表破裂型潜在震源区的地震地质综合判定[J].震情研究,2000,44(1):1426.
[13] 张景发,刘钊.InSAR技术在西藏玛尼强震区的应用[J].清华大学学报(自然科学版),2002,42(6):847850.
[14] 徐锡伟,冉勇康,周本刚,等.张北尚义地震的地震构造环境与宏观破坏特征[J].地震地质,1998,20(2):135145.
[15] 王超,张红,刘智.星载合成孔径雷达干涉测量[M ].北京:科学出版社,2002.
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